Written by Mariko Tamaki, Matthew Rosenberg, Mark Waid. Art by Ivan Reis, Danny Miki, Fernando Blanco, Dan Mora. Cover by Irvin Rodriguez. Its the landmark, oversize issue Detective Comics #1050, and some of the biggest names in comics are here to celebrate the Dark Knight! First up in "The Tower" part four, the villainous force keeping Arkham Towers patients sedated is at last revealed—and this villains return is guaranteed to catch you by surprise! Its the dramatic conclusion to act one of Mariko Tamakis Arkham Tower epic, brought to life by the legendary Ivan Reis! Then, in "House of Gotham" part four, Matthew Rosenberg and Fernando Blanco take us into the seedy underbelly of Gothams criminal elite through the lens of the original Robin (Dick Grayson), and reveal what it takes for a young man to survive amongst the deadliest killers in the DCU. Its a tour de force of Gothams vilest villains! Last but not least, making his grand return to the DCU, writer Mark Waid teams with Detective Comics uber-artist Dan Mora to bring you the start of a brand-new day for Batman…and Superman? Its the worlds finest collaboration that youll need to read to believe! 48 pages, full color. Rated T+